About Comprehensive Prosthetics & Orthotics. Comprehensive Prosthetics & Orthotics (CPO) is among the largest orthotic and prosthetic service providers in the U.S. with a wide network of clinics across Illinois, Iowa, Indiana, and Missouri. Essential Functions. Provide patient care in orthotic soft goods. Evaluate selected orthotic needs of patients. Measure, fit and adjust devices. Complete and maintain accurate documentation of patient care pro...